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Lubricating device for components within casing structure of vehicular power transmitting system

a technology of lubricating device and transmission system, which is applied in the direction of transportation and packaging, drip or splash lubrication, vehicle sub-unit features, etc., can solve the problem of increasing the risk of torque loss of the transmission system, and achieve the effect of reducing the torque loss

Active Publication Date: 2019-06-20
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a lubricating device for a power transmitting system of a vehicle that reduces torque loss and prevents power loss during high-speed operation. The device includes a catcher reservoir and a first and second lubricant guide plates with different inclination angles to direct lubricant oil to the catcher reservoir and various components of the system. This reduces the amount of lubricant oil directed into the catcher reservoir, minimizing lubricant oil loss during operation. The first and second lubricant guide plates can be easily formed within the casing members of the system, and the amount of lubricant oil directed into the catcher reservoir can be adjusted by adjusting the helix angle of the helical gear.

Problems solved by technology

Where the amount of the lubricant oil stored in the catcher reservoir exceeds a storage capacity of the catcher reservoir, the lubricant oil overflowing from the catcher reservoir is again splashed up by the counter drive gear and the other gears, so that there is a risk of increase of a torque loss of the power transmitting system due to stirring of the lubricant oil by the gears.

Method used

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  • Lubricating device for components within casing structure of vehicular power transmitting system
  • Lubricating device for components within casing structure of vehicular power transmitting system
  • Lubricating device for components within casing structure of vehicular power transmitting system

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embodiment

[0020]Reference is first made to FIG. 1, which is the cross sectional view of a power transmitting system 10 of a hybrid vehicle 8, which is provided with a lubricating device according to one embodiment of this invention. The power transmitting system 10 includes an engine (not shown), and a second electric motor MG2, and the hybrid vehicle 8 is of an FF type (front-engine front-drive type) which is driven with one or both of the engine and the second electric motor MG2.

[0021]The power transmitting system 10 includes: an input shaft 14, a power distributing mechanism 16 and a first electric motor MG1 which are disposed on a first axis CL1; a counter shaft 18 disposed on a second axis CL2; a speed reduction shaft 20 and the above-indicated second electric motor MG2 which are disposed on a third axis CL3; and a differential gear device 24 disposed on a fourth axis CL4. These components are accommodated within a casing structure 12.

[0022]The input shaft 14 is disposed rotatably about ...

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Abstract

A lubricating device for lubricating components includes first and second lubricant guide plates which have respective inclination angles with respect to a horizontal line such that the angle of inclination of the first lubricant guide plate is smaller than that of the second lubricant guide plate. The inclination angle of the first lubricant guide plate is determined to permit the lubricant oil guided by the first lubricant guide plate to be directed into the catcher reservoir, and to inhibit the lubricant oil from being supplied to component or components disposed above the gear, and the inclination angle of the second lubricant guide plate is determined to permit the lubricant oil guided by the second lubricant guide plate to be supplied to the component or components disposed above the gear.

Description

[0001]This application claims priority from Japanese Patent Application No. 2017-244536 filed on Dec. 20, 2017, the disclosure of which is herein incorporated by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates to a lubricating device for lubrication of components within a casing structure of a vehicular power transmitting system.BACKGROUND OF THE INVENTION[0003]There is known a lubricating device for lubricating various components within a casing structure of a vehicular power transmitting system. The lubricating device is configured such that a lubricant oil splashed up by rotation of a differential ring gear accommodated within the casing structure is supplied to the various components such as gears, while the lubricant oil is stored in a catcher reservoir. JP5790630B2 discloses an example of such a lubricating device. This publication describes that a differential ring gear, a counter drive gear, a counter driven gear and a catcher reservoir of...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F16H57/04F16H57/02F01M9/06
CPCF16H57/0423F16H57/02F16H57/0457F16H57/045F01M9/06B60K6/405B60K6/445B60Y2306/03F16H57/037F16H57/0409F16H57/0428F16H57/043F16H57/0441F16H57/0476F16H57/0483F16H57/0486F16H57/0494F16H2057/02008Y02T10/62
Inventor HAGINO, YOSHITERUKATAYAMA, YUKIKAMIYA, KAZUAKI
Owner TOYOTA JIDOSHA KK
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